Barleria pretoriensis C.B.Clarke

Much-branched subshrub or perennial herb 30-80 cm tall, erect, straggling or decumbent; stems with many white stiffly appressed medifixed hairs 0.2-0.5 mm long; upper internodes often with short spreading glandular hairs. Leaves lanceolate or narrowly oblong, 2-5 x 0.3-1 cm, base rounded to cuneate, apex acute, apiculate, surfaces with sparse biramous (medifixed and/or anvil-shaped) hairs 0.4-0.8 mm long, often restricted to margin and midrib beneath; lateral veins 3-4 pairs; petiole 1-5 mm. Inflorescences single-flowered in upper axils and subterminal, often one flower per node, widely spaced, sessile or peduncle to 4 mm long; bracts foliaceous, reduced upwards, typically 10-18 x 1.5-3.5 mm at uppermost nodes; bracteoles linear-lanceolate, narrowly elliptic or narrowly spathulate, (3) 5-12 (24) x 0.4-2 (6) mm, hairs as on leaves, usually with short spreading glandular hairs; pedicels 0-3 mm long. Outer calyx lobes subequal, narrowly lanceolate, anterior lobe 8-17.5 x 2.5-4 mm, apex notched for 0.7 (2) mm, surface with dense white appressed, simple and biramous (often anvil-shaped) hairs and sparse to numerous spreading glandular hairs, prominently 2-veined; posterior lobe with apex acute, surface with 1 or 3 prominent veins; lateral lobes linear-lanceolate, 7.5-13.5 mm long. Corolla 38-60 mm long, white at first, turning pale mauve, pink or violet; pubescent mainly on lateral lobes externally, hairs mainly glandular; tube cylindrical, 13.5-25 mm long, barely expanded towards mouth; limb in 4+1 arrangement; abaxial lobe 19.5-27.5 x 9-12.5 mm, offset by 3.5-7.5 mm; lateral lobes 19-26 x 7-13 mm; adaxial lobes 20-30 x 5-9.5 mm. Stamens attached 7-9 mm from corolla base; filaments 21-33 mm long; anthers 3.2-4.5 (5) mm long; lateral staminodes 0.8-2.5 mm long. Ovary with dense appressed buff-coloured hairs throughout; style glabrous; stigma 2-3 mm long. Capsule 13-18 mm long, appressed-hairy including some anvil-shaped hairs. Seeds c.5 x 4 mm.